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IR2175-IR2175S
Linear Current Sensing IC in a 8-Lead DIP package
International
Data Sheet No. PD60208 Rev. E
TOR Rectifier IR2175(S) &(pr)
LINEAR CURRENT SENSING IC
Features Product Summary
. Floating channel up to +600V
o Monolithic integration VOFFSET 600Vmax
. Linear current feedback through shunt resistor
q Direct digital PWM output for easy interface laBs 2mA
. Low IQBS allows the boot strap power supply Vin +/-260mVmax
. Independentfast overcurrent trip signal . . o
q High common mode noise immunity Gain temp.drift 20ppm/ C (typ.)
. Input overvoltage protection for IGBT short circuit
condition fo 130kHz (typ.)
q Open Drain outputs
. Also available LEAD-FREE
Description
The IR2175 is a monolithic current sensing IC designed
for motor drive applications. It senses the motor phase
current through an external shunt resistor, converts from
analog to digital signal, and transfers the signal to the
low side. IR's proprietary high voltage isolation tech-
nology is implemented to enable the high bandwidth
signal processing. The output format is discrete PWM
to eliminate need for the A/D input interface for the
IR2175. The dedicated overcurrent trip TRC) signal fa-
cilitates IGBT short circuit protection. The open-drain
outputs make easy for any interface from 3.3V to 15V. S
Block Diagram
Overcurrent trip
signal delay
Zusec (typ)
Overcu rrent trip level +/-260mV (typ.)
Packages
8 Lead SOIC
IR2175S
8 Lead PDIP
IR2175
Up to 600V
15V < VCC Ve
PWM Output 47 PO VS i
IR21 75 -
GND < COM VB KN
Overcurrent < E
H To Motor Phase
(Refer to Lead Assignments for cor-
rect pin configuration). This/These
diagram(s) show electrical connec-
tions only. Please refer to our Appli-
cation Notes and DesignTips for
proper circuit board layout.
|R2175(S)&(PbF)
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage
parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal
resistance and power dissipation ratings are measured under board mounted and still air conditions.
International
TOR Rectifier
Symbol Definition Min. Max. Units
Vs High side offset voltage -0.3 600
V33 High side floating supply voltage -0.3 25
VCC Low side and logic fixed supply voltage -0.3 25
VIN Maximum input voltage between lhN+ and Vs -5 5 V
Vpo Digital PWM output voltage COM -O.3 VCC +0.3
VOC Overcurrent output voltage COM -0.3 VCC +0.3
dV/dt Allowable offset voltage slew rate - 50 V/ns
PD Package power dissipation @ TA 3 +25°C 8 lead SOIC - .625 W
8 lead PDIP - 1.0
RthJA Thermal resistance, junction to ambient 8 lead SOIC - 200
8 lead PDIP - 125 OCIW
TJ Junction temperature - 150
Ts Storage temperature -55 150 "C
TL Lead temperature (soldering, 10 seconds) - 300
Note 1: Capacitors are required between VB and Vs when bootstrap power is used. The external power supply,
when used, is required between VB and Vs pins.
Recommended Operating Conditions
The output logic timing diagram is shown in figure 1. For proper operation the device should be used within the recommended
conditions.
Symbol Definition Min. Max. Units
VB High side floating supply voltage Vs +13.0 Vs +20
Vs High side floating supply offset voltage 0.3 600
Vpo Digital PWM output voltage COM VCC v
VOC Overcurrent output voltage COM VCC
VCC Low side and logic Fixed supply voltage 9.5 20
VIN Input voltage between 1/m+ and Vs -260 +260 mV
TA Ambient temperature -40 125 "C
2
